Hi Milad :

yes , it look loke the anode film  . the amazing that not all the board have
this chocolate copper , some times maybe just little area in the board have
the chocolate cooper and the other areas in the board OK ,also not all the
panels in  the batch that was in the tank have a chocolate copper .

Zreik Anan
Technology Manager PCB
 P.O.B 631  Migdal Haemek 23105
Tel      : 972-46544300 Ext -267
Mobile : 972-577675569



-----Original Message-----
From: TechNet [mailto:[log in to unmask]]On Behalf Of George Milad
Sent: Thursday, September 01, 2005 5:01 PM
To: [log in to unmask]
Subject: Re: [TN] chocolate plating


I have seen a similar surface one time. It was the result of leaving the
parts in the acid bath without rectification. A non adherent oxide,chocolate
brown surface would form, more like the anode film.

Best  regards

George Milad
[log in to unmask]
National Accounts Manager  for Technology
Uyemura International Corporation
Technical Center
240  Town LIne Rd
Southington CT 06489
(516) 901 3874 (mobile)
(860)  793-4011 (office)
(860) 793-4020  (fax)


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